英语词汇“perpetual motion”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	perpetual motion
释义	perpetual motion noun 1. : the motion of an ideal mechanism that could continue to operate indefinitely without drawing upon an external source of energy 2. obsolete : perpetual motion machine
随便看	ier -ier ieroe ies -ies -iest iest if IF if IF IF3G ifafa ifafa lily if anything if-bet if-clause ife -iferous iferous iff IFF IFF iffen iffy

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